org.apache.openjpa.lib.util.collections

Class AbstractDualBidiMap.BidiMapIterator<K,V>

java.lang.Object

org.apache.openjpa.lib.util.collections.AbstractDualBidiMap.BidiMapIterator<K,V>

All Implemented Interfaces:

Iterator<K>, MapIterator<K,V>, ResettableIterator<K>

Enclosing class:

AbstractDualBidiMap<K,V>

protected static class AbstractDualBidiMap.BidiMapIterator<K,V>
extends Object
implements MapIterator<K,V>, ResettableIterator<K>

Inner class MapIterator.

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	canRemove Whether remove is allowed at present
protected Iterator<Map.Entry<K,V>>	iterator The iterator being wrapped
protected Map.Entry<K,V>	last The last returned entry
protected AbstractDualBidiMap<K,V>	parent The parent map

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	BidiMapIterator(AbstractDualBidiMap<K,V> parent) Constructor.

Method Summary

Modifier and Type	Method and Description
K	getKey() Gets the current key, which is the key returned by the last call to next().
V	getValue() Gets the current value, which is the value associated with the last key returned by next().
boolean	hasNext() Checks to see if there are more entries still to be iterated.
K	next() Gets the next key from the Map.
void	remove() Removes the last returned key from the underlying Map (optional operation).
void	reset() Resets the iterator back to the position at which the iterator was created.
V	setValue(V value) Sets the value associated with the current key (optional operation).
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Iterator

forEachRemaining

Field Detail

parent

protected final AbstractDualBidiMap<K,V> parent

The parent map

iterator

protected Iterator<Map.Entry<K,V>> iterator

The iterator being wrapped

last

protected Map.Entry<K,V> last

The last returned entry

canRemove

protected boolean canRemove

Whether remove is allowed at present

Constructor Detail

BidiMapIterator

protected BidiMapIterator(AbstractDualBidiMap<K,V> parent)

Constructor.

Parameters:

parent - the parent map

Method Detail

hasNext

public boolean hasNext()

Description copied from interface: MapIterator

Checks to see if there are more entries still to be iterated.

Specified by:

hasNext in interface Iterator<K>

Specified by:

hasNext in interface MapIterator<K,V>

Returns:

true if the iterator has more elements

next

public K next()

Description copied from interface: MapIterator

Gets the next key from the Map.

Specified by:

next in interface Iterator<K>

Specified by:

next in interface MapIterator<K,V>

Returns:

the next key in the iteration

remove

public void remove()

Description copied from interface: MapIterator

Removes the last returned key from the underlying Map (optional operation).

This method can be called once per call to next().

Specified by:

remove in interface Iterator<K>

Specified by:

remove in interface MapIterator<K,V>

getKey

public K getKey()

Description copied from interface: MapIterator

Gets the current key, which is the key returned by the last call to next().

Specified by:

getKey in interface MapIterator<K,V>

Returns:

the current key

getValue

public V getValue()

Description copied from interface: MapIterator

Gets the current value, which is the value associated with the last key returned by next().

Specified by:

getValue in interface MapIterator<K,V>

Returns:

the current value

setValue

public V setValue(V value)

Description copied from interface: MapIterator

Sets the value associated with the current key (optional operation).

Specified by:

setValue in interface MapIterator<K,V>

Parameters:

value - the new value

Returns:

the previous value

reset

public void reset()

Description copied from interface: ResettableIterator

Resets the iterator back to the position at which the iterator was created.

Specified by:

reset in interface ResettableIterator<K>

toString

public String toString()

Overrides:

toString in class Object